Find all x's for this equation.

$\displaystyle \cos x \geq - \frac{1}{2}$

When I look at the cosine graph, this looks like the answer

$\displaystyle (-\frac{2\pi}{3} + 2\pi k) \leq x \leq (\frac{2\pi}{3} + 2\pi k) $, k is a whole number

but I am not sure. The answer just seems a bit strange. Can someone please tell me if this is the correct way to answer this question?

(Is there a way I can post the cosine graph in this thread?)

Thanks!